Stackable packaging tray



FIG. 1 is a top perspective view of a stackable packaging tray showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top perspective view showing a modified form of my new design;

FIG. 4 is a bottom perspective view thereof;

FIG. 5 is a side view in elevation of the stackable packaging tray of FIGS. 1 and 2;

FIG. 6 is an end view thereof;

FIG. 7 is a side view in elevation of the modified stackable packaging tray of FIGS. 3 and 4; and

FIG. 8 is an end view in elevation thereof. 

The ornamental design for a stackable packaging tray, as shown and described. 